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A hand exerts a constant horizontal force on a block that
Chapter 17, Problem 8Q(choose chapter or problem)
A hand exerts a constant horizontal force on a block that is free to slide on a frictionless surface (Fig. ). The block starts from rest at point
, and by the time it has traveled a distance
to point
it is traveling with speed \(v_{B}\). When the block has traveled another distance
to point
will its speed be greater than, less than, or equal to \(2 v_{B}\) ? Explain your reasoning.
Equation Transcription:
Text Transcription:
v_B
2_vB
Questions & Answers
QUESTION:
A hand exerts a constant horizontal force on a block that is free to slide on a frictionless surface (Fig. ). The block starts from rest at point
, and by the time it has traveled a distance
to point
it is traveling with speed \(v_{B}\). When the block has traveled another distance
to point
will its speed be greater than, less than, or equal to \(2 v_{B}\) ? Explain your reasoning.
Equation Transcription:
Text Transcription:
v_B
2_vB
ANSWER:
Solution 8Q:
Step 1 of 2:-
Here we have to find whether the speed of the block will be less than, greater than or equal to .
A constant horizontal force was applied on the block.
The block travelled the distance “d”.
The work done is,
.
Again the same force is there and the block travelled “d” distance again.
So, the work done is again .